Scientists and growers have developed technologies that increase the yield of plants. Yield is the
amount of useful plant part per plant. Plants are sometimes grown in artificial environments, in which the growing conditions can be controlled.

On a shared Google Doc Please research links to the following ideas:

1) What are Greenhouses and how do they work to grow plants?

2) What is hydroponics and how does it work?

3) How can indoor gardening produce food?